Rock Stars vs. Rap Stars

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Nicki Minaj vs. Frank Turner

After Nicki Minaj was almost an hour late for her set at Scotland's T in the Park festival, Brit singer-songwriter Frank Turner called her out for what he called disrespectful behavior toward fans and crew. "Nicki Minaj has been a total selfish s--thead to all the hardworking crew backstage at T," Turner tweeted. "Pathetic. F--k off...You can (I suppose) be a d--k to your own crew. You're paying them. But everyone else? And not to mention the people out front. Ugh."
(Photos from left: Jim Dyson/Getty Images, Simone Joyner/Getty Images)